51% difference in road death numbers from 2 departments

In a curious case of how two government agencies can come up with two sets of data on the same issue, and that too with a huge difference, even when the source of their numbers is the same, the NCRB under the home ministry and the TRW under transport ministry have been releasing different figures on road deaths based on reports from state police departments. This has been happening for the past many years, the comparative analysis of reports shows.